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7/20/2026
How to upgrade a MicroK8s cluster

How to upgrade a MicroK8s cluster

Short summary

A step-by-step tutorial for upgrading a 3-node MicroK8s cluster one node at a time using cordon, drain, snap refresh, and uncordon. It covers safe pod eviction, version-by-version upgrades, and post-upgrade deployment rebalancing. Not AI-related but solid DevOps operations content.

  • •Cordon and drain each node before upgrading via snap refresh
  • •Upgrade one minor version at a time, then uncordon and verify
  • •Rebalance deployments across all nodes after full cluster upgrade

Generated with AI, which can make mistakes.

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